Sirup pump



March 31, 1931. 1c, BUTTNER 1,798,453

SIRUP PUMP Filed March 25, 1929 Patented Mar. 31, 1931 1- UNITED STATESPATENT OFFICE WILLIAM C. BUTTNER, OF CHIGAGO, ILLINOIS, ASSIGNOR TO THEBASTIAN-BLESSING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OFILLINOIS SIRUP PUMP Application filed March 25, 1929. Serial No.349,586.

This invention relates to sirup pumps and its object is to provide apump of novel and simple construction which will deliver an eX- actpredetermined charge of sirup at each operation.

Another object of the invention is to provide a sirup pump which cannotbe manipulated without delivering an exact predetermined charge ofsirup.

And another object of the invention is to provide adjusting means forregulating the charge of sirup to be delivered by the pump and toconstruct and arrange said means so that they can not be surreptitiouslymanlp'ulated.

And a further object of the invention is to provide the pump with anovel valve mechanism which will insure the discharge of an exactpredetermined charge of sirup at each operation of the pump.

In the accompanying drawings I have lllustrated a selected embodiment ofthe invention and referring thereto,

Fig. 1 is a sectional view of the pump.

Fig. 2 is an enlarged detail sectional view showing the adjusting meanson the line 2-2 of Fig. 1.

In the drawings 3 is a tubular pump casing and 4 is a cap or facingplate mounted on the upper end of the casing and provided with a collar5 and a discharge spout 6. A charge chamber or plunger chamber 7 1smounted on the lower end'of the casing and it is provided at its bottomwith a cross bar 8 having a centrally disposed stud 9 within thechamber. A plunger stem 10 is arranged to operate through the casing andthe collar and its lower end 11 is tubular and enlarged to slidably fitwithin the casing. larged lower end of the valve stem provides acylindrical valve chamber for the valve 12, which slidably fits therein,and it is provided at its lower end with a plunger 13 which operates inthe charge chamber 7. The plunger has an opening 13 which registers withthe valve chamber 11 and side openings 14 are provided in the valvechamber just above the plunger. 15 is supportedat its lower end in asmall casing 16 mounted on the valve chamber 7 This en- 7 A dischargetube I and it contains a check valve 17 which forms a communicationbetween the charge chamber and the discharge tube. The upper end of thedischarge tube is secured in the cap or facing plate at the lower end ofthe spout. The g lower end 12 of the valve 12 fits and closes theopening 13 at the lower end of the valve chamber and a groove or recess18 is formed in the valve slightly spaced above its lower end to permitthe flow of sirup through the openings 13, 14 into the charge chamberabove the plunger. A hook 19 is fastened to the upper end of the valveand it projects through the upper end of the valve chamber into thespace between the stem and the casing 8. A collar 20 on this hookengages the top of the valve chamber to limit the downward movement ofthe valve and to hold it in normal position in the chamber projectingbelow the plunger with communication open from the space below theplunger through the valve recess or groove 18 and openings 13 and 11into the charge chamber space above the plunger. A latch 21 is pivotallymounted on the stem to engage the hook 19 and this latch is weighted at22 and it has an arm 23. A tubular collar 24 interiorly threaded issecured in the casing 3 and a sleeve 25 is arranged on the stem andthreadedly engages the collar 24. The caring is cut away on oppositesides at 3 to permit access to the sleeve and the sleeve is knurled at26 to enable it to be adjusted. The sleeve and the stem are shoulderedat 27 to limit the up movement of the stem and plunger. A spring 28 ishoused within the upper end of the casing 3 and the lower end of asleeve 29 on the handle 30 said sleeve 29 operating in the collar 5 andeasing 3. The handle is mounted on the upper end of the stem and one endof the spring engages the handle and its other end .engages a stopcollar 31 fastened in the casing. A set screw 32 operates through theregulating sleeve 25 and engages the stem 10 to lock the sleeve inadjusted position. The arm 23 swings in the space between the stem 10and the casing 8 and engages the lower end of the sleeve 25.

In practice the spring 28 holds the handle, the stem, the valve and theplunger in nor- (iii Sid

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mal up position with the valve open as shown in Fig. 1. The pump issubmerged in the sirup in a sirup jar with the cap fitting at the top ofthe jar and the sirup flows through the valved openings 13, l t fillingthe space above the plunger. The handle is depressed to deliver a chargeof sirup and this involves a. downward movement of the stem and theplunger, the valve being carried along with the stem and plunger untilit engages the stud 9 whereupon the movement of the valve is stoppedwhile the plunger continues its downward movement, thereby closing thevalve passage 13, 14. Then the chamber above the plunger is filled withsirup and when the handle is released the spring returns the stem andplunger to normal up position and at the same time discharges the sirupthrough the check valve 17 into the discharge tube and an exactpredetermined charge of sirup is delivered from the spout. \Vhen thevalve 12 engages the stud 9 the stem and plunger may continue downwarduntil the lower end of the handle sleeve 29 engages the stop 31whereupon the downward movement of the stem and plunger will be stopped.At this time the valve hook 19 will be located above the latch 21 andthis latch will be swung by its weight 22 into operative engagement withthe hook so that on the return movement of the stem andplunger the valvewill be carried along therewith until the arm 23 engages the lower endof the sleeve 25 which will disengage the latch 21 from the hook 19 andpermit the valve to open, sliding downward in the valve chamber untilthe collar 20 engages the upper end ofsaid valve. Thereupon the chargechamber will be ready to re-fill on next down stroke of handle. Thesleeve 25 may be adjusted to'control'the up movement of the plunger byengagementof the shoulders 27 and thereby regulate the sirup charge. Thescrew 32. is employed to lock the sleeve in its adjusted position. Sincethe adjusting means and all of the control parts of the pump areenclosed within the casing of the pump and submerged within the sirup inthe sirup jar there will be no opportunity for surreptitious adjustment. An exact predetermined charge is de livered at each operation ofthe pump because discharge of the sirup can only be offected upon a fulldown stroke of the plunger otherwise the valve will not close and thesirup will not be delivered. It takes-a full stroke of the plunger toclose the plunger valve and lock it closed so that on the re t-iontherefore provides a safe-guardagainstcareless or, impropermanipulation. of the pump and insures-the delivery of an exactpredetermined charge of sirup so that the drinks dispensed will alwaysbe uniform in the amount of sirup contained therein.

I have shown the invention in a selected embodiment satisfactory forachieving the results sought for, but I reserve the right to make allchanges or modifications therein which may be necessary or desirable foradapting the invention to different conditions, or for other purposes,and within the scope of the following claims:

I claim:

1. A sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamher,.said chamherbeing open to receive sirupbelow the plunger and said plunger having a. passage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adapted to be depressedmanually, a valve for closing said passage on the down stroke of theplunger, and a spring for returningthe stem and'plunger to initialposition.

2. A sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, said chamber being open to receive sirupbelow the plunger and said plunger having a pas sage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adapted to be depressedmanually, a movable valve in said passage, a stop arranged to be engagedby said valve for closing said passage when the plunger reaches thelimit of its downward stroke, and a spring for returning the stem andplunger to initial position and effecting delivery of a charge of sirup.

3. A- sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, said chamber being open to receive sirupbelow the plunger and said'plungcr having a passage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adaptedto be depressedmanually, a movable valve in said passage, saidplunger andvalve beingconjointly movable and said plunger being movable independently of saidvalve to eiiect closure of said passage at the completion of the downstroke of the plunger, and a spring for returning the stem and plungerto initial position;

h A sirup pump comprising a casing, a

chamber at the bottom of thecasing, a'stenr operating in the casing, aplunger carried by the sternand operating'in' the chamber,

said chamber being open to receive sirup below the plunger and saidplunger havin apassage to pcrmi; sirup to pass above the plunger, valveddischarge means connected with said chamber above the plunger, said stemand plunger adapted to be depressed manually, a valve in said passageadapted to move with said stem and plunger until nea r the completion oftheir downward stroke and then to close said passage and confine acharge of sirup in the chamber above the plunger, and a spring forreturning the stem and plunger to initial position and thereby cifectingthe delivery of a charge of sirup.

5. A sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, said chamber being open to receive sirupbelow the plunger and said plunger having a passage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adapted to be depressedmanually and said stem having a valve chamber at its lower end, a valvein said chamber for closing said passage and adapted to move with thestem until near the completion of the downward stroke and then to closesaid passage and confine a ch rge of sirup in the chamber above theplunger, and a spring for returning the stem and plunger to initialposition and thereby effecting the delivery of: a charge of sirup.

6. A sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, said chamber being open to receive sirupbelow the plunger and said plunger having a passage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adapted to be depressedmanually and said stem having a valve chamber at its lower endintersecting said passage, a valve for closing said passage and adaptedto move with said stem until near the completion of the downward strokeand then to close said passage and confine a charge of sirup in thechamber above the plunger, and a springttor returning the stem andplunger to initial position and thereby effecting the delivery of acharge of sirup.

7. A sirup pump comprising a casing, a charge chamber at the bottom ofthe casing, a stem operating in the casing and having a valve chamber atits lower end, a plunger carried by the stem in said charge chamber,there being a passage through the plunger at the bottom of the valvechamber and through the side of the valve chamber above the plunger topermit sirup to pass above the plunger, valved discharge means connectedwith said chamber above the plunger, and a normally open valve in saidvalve chamber ada'itod to inevciconjointly with the stem and plunger-ontheir down stroke, a fixed stop for closing the valve at the completionof the down stroke of the stem and plunger, a

spring for returning the stem and plunger to lnllllilllp'OSitloll, andmeans forliolding said valve in position closing said passage "duringthe up stroke of the stem and plunger.

through the side of the valve chamber above the plunger to permit sirupto pass above the plunger, valved discharge means connected with saidchamber above the plunger, and a normally open valve in said valvechamber adapted to move conjointly with the stem and plunger on theirdown stroke, a fixed stop for closing the valve at the completion of thedown stroke of the stem and plunger, a spring for returning the stem andplunger to initial position, means for holding said valve in positionclosing said passage during the up strokeiof the stem and (plunger, andmeans for releasing said valve to open said passage at the completion ofthe up stroke of the stem and plunger. A 1 p 9. A, sirup pumpcomprising, a casing, a charge chamber at the bottom of the casing, astem operating in the casing and having a valve chamber at its lowerend, a plunger carried by the stem in said charge chamber, there being apassage through theplunger at the bottom of the valve chamber andthrough the side of the valve chamber above the plunger .to permit sirupto pass above the plunger,

valved discharge means connected with said chamber above the plunger,anda normally open valve in said valve chamber adapted to move conjointlywith the stem and plunger on their down stroke, a fixed stop for closingthe valve at the completion of the down stroke of the stem and plunger,a spring for returning the stem and plunger to initial position, a latchdevice for holding said valve in posi tion closing said passage duringthe up stroke of the stem and plunger, and means for releasing saidvalve to open said passage at the completion of the up stroke of thestem and plunger.

10. A sirup pump comprising a casing, a chamber at the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, said chamber being open to receive sirupbelow the plunger and said plunger having a passage to permit sirup topass above the plunger, valved discharge means connected with saidchamber above the plunger, said stem and plunger adapted to be depressedmanually, a valve for closing said passage on the up stroke oftheplunger, an interiorly threaded collar secured "Within the casing, asleeve on the stem threadedly engaging said collar, inter-engagingshoulders on the sleeve and stem to control the up stroke of theplunger, and a spring for'returning the stem and plunger "to initialposition.

11. A sirup pump coinprisinga casing, a chamber at the bottom of thecasing, a stem operating inthe easing, a plunger carried by 'thestema11'cl'-0perating in the chamber, said chamberbeing open to receive*sirup below the plunger and said-plungerhaving a passage to permitsirup' to pass abovethe plunger, valved'discharge'means connected withsaid chamber above'the plunger, said stem and plunger adapted to bedepressed manu- :ally,a valve'for closing said passage on the upstrokeof the plunger, an interiorly threaded collar secured Within the casing,a sleeve onthe stem threadedly engaging said collar, interengagingshoulders on the sleeve and stemto controlthe up stroke of the plunger,a portion of said'sleeve being knurled and said casing having an openingthe'reinto permit access to said knurled portion of the sleeve forturning the sleeve.

'12. A sirup pump comprising a casing, a chamberat the bottom of thecasing, a stem operating in the casing, a plunger carried by the stemand operating in the chamber, valved discharge means connected with saidchamber above the plunger, a passage in said diaphragm to permit sirupto pass above the'plunger on the down stroke of the plunger, a valve insaid passage for maintaining said passage open during the down stroke ofthe plunger,'means for holding saidvalve closed during the up stroke ofthe plunger to effect discharge ofthe sirup above the plunger, andmeansfor inducing the up stroke f the plunger.

WILLIAM C. BUTTNER.

